Add unit test for CI generate

Author: Vasileios Karakasis

requirements.txt

@@ -1,9 +1,10 @@
+coverage==5.3
 importlib_metadata==2.0.0
 jsonschema==3.2.0
 pytest==6.2.0
 pytest-forked==1.3.0
 pytest-parallel==0.1.0
-coverage==5.3
+requests==2.25.1
 setuptools==50.3.0
 wcwidth==0.2.5
 PyYAML==5.3.1

unittests/test_ci.py

@@ -0,0 +1,33 @@
+# Copyright 2016-2021 Swiss National Supercomputing Centre (CSCS/ETH Zurich)
+# ReFrame Project Developers. See the top-level LICENSE file for details.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+
+
+import io
+import pytest
+import requests
+
+import reframe.frontend.ci as ci
+import reframe.frontend.dependencies as dependencies
+import reframe.frontend.executors as executors
+from reframe.frontend.loader import RegressionCheckLoader
+
+
+def test_ci_gitlab_pipeline():
+    loader = RegressionCheckLoader([
+        'unittests/resources/checks_unlisted/deps_complex.py'
+    ])
+    cases = dependencies.toposort(
+        dependencies.build_deps(
+            executors.generate_testcases(loader.load_all())
+        )[0]
+    )
+    with io.StringIO() as fp:
+        ci.emit_pipeline(fp, cases)
+        yaml = fp.getvalue()
+
+    response = requests.post('https://gitlab.com/api/v4/ci/lint',
+                             data={'content': {yaml}})
+    assert response.ok
+    assert response.json()['status'] == 'valid'